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Coal Geology & Exploration

Authors

ZHAO Han, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
HE Huan, School of Chemical Engineering and Technology, China University of Mining and Technology, Key laboratory of Coal Processing and Efficient Utilization of Ministry of Education, Xuzhou 221116, ChinaFollow
WANG Jiangze, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
SONG Yanli, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
NIU Jianglu, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
CHEN Linyong, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
GUO Xin, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
LIU Jian, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
GUAN Jiadong, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China
YUAN Xuefang, State Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048000, China; Yi'an Lanyan Coal and Coalbed Methane Simultaneous Extraction Technology Co. Ltd., Jincheng 048000, China

Abstract

Liupan Shan lies between the Tibetan plateau and Ordos block and has been under the remote effect of the northeastward extension of the Tibetan plateau. The former research about the uplift of Liupan Shan mainly focused on the petrology, structural deformation or tectonic evolution study from the Cretaceous to early period of Cenozoic. However, the Late Pleistocene geological study closely connected with the human activities was rarely mentioned. In this study, we carried out systematic sedimentary research in the Qingshuihe basin adjacent to the Liupan Shan tectonic belt, re-determine the sedimentary sequence at first, then reverse the uplift history of Liupan Shan tectonic belt since the Late Pleistocene, and predict the possible environmental effect in the future at last. According to the research, there developed two ancient lakes in the Qingshuihe basin during the early to middle stage of the Late Pleistocene while the environment was dominated by warm and moist climate. At the end of the Late Pleistocene, ancient lakes gradually disappeared from the Qingshuihe valley and the environment deteriorated as a result of the rapid uplift of Liupan Shan. What's more, alluvial fan in the front area of mountains lie in the middle part of Liupan Shan tectonic belt, continuously developed since the Late Pleistocene. The alluvial fan is expanding eastward along the Qingshuihe valley until now. Hence, there is a high risk that the Qingshuihe would be intercepted and dammed lake could be created. This research not only make up the deficiency of the uplift study of the Liupan Shan since the Late Pleistocene, but also provide solid geological basis for the comprehensive treatment of the Qingshuihe valley.

Keywords

tectonic belt of Liupan Shan, Qingshuihe basin, Late Pleistocene, sedimentary sequence, environmental effect, Salawusu Formation, Shuidonggou Formation

DOI

10.3969/j.issn.1001-1986.2020.06.019

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